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function menu3() { location.href = "http://www.szssty.com/wenquan/"; }
function menu4() { location.href = "http://www.szssty.com/kefang/productb.asp?id=18"; }
function menu5() { location.href = "http://www.szssty.com/huiyi/"; }
function menu6() { location.href = "http://www.szssty.com/guohua/"; }